Tube frame for axminster looms



Feb. 22, 1944. s. s. GARRITY TUBE FRAME FOR AXMINSTER LOMS Original Filed April 7, 1939 2 Sheets-Sheet l IIIHULI wml l l I l 0 l l I l Il IUHIIIIIIH IH ||||I| I l I l I l l I l l .IIIHI .bwl

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Feb. 22, 1944. s s, GARRITY TUBE FRAME FOR AxMINsTER LooMs Original Filed April '7, 1939 2 Sheelis--Sheeil 2 YW N 22%@ Patented Feb. 22, 1944 TUBE FRAME FOR AXMINSTER LOOMS Spencer S. Garrity, Amsterdam, N. Y., assignor to Bigelow-Sanford Carpet Co., Inc., Thompsonville, Conn., a corporation of Massachusetts Original application April 7, 1939, Serial No. 266,561. Divided and this application April 14, 1942, Serial No. 438,910

9 Claims.

This application is a division of my prior copending application Serial No. 266,561, led April '7, 1939, now Patent No. 2,314,139.

The present invention relates to Axminster looms, and particularly to a Variable length tube frame adapted for use in looms of different widths.

The pile yarn in an Axminster loom is conventionally supplied on a series of tube frames, each of which carries, on one or more spools, the pile tuft yarns for a single pile row extending across the fabric. Each tube frame, accordingly, is of a length approximating the width of the fabric to be woven. Axminster fabrics of different widths are woven on looms of conformingly different widths, each conventionally requiring a large number of tube frames of corresponding length.

The object of the present invention is to provide an Axminster tube frame which is variable in length and is thereby adapted for use in looms of different Widths. By my invention I am able to effect a substantial reduction in the inventory of tube frames required by the Axminster fabric manufacturer.

In the drawings- Fig. 1 is a front elevation View of a tube frame of extended length and yarn spool embodying my invention;

Fig. 2 is a view corresponding to Fig. l but showing the tube frame shortened in length;

Fig. 3 is a vertical section on the line 3 3 of Fig. 2;

Fig. 4 is a disassembled perspective View of the bar sections of the extended tube frame showing the securing sleeves, and

Fig. 5 is a front elevation view of a variable length spool which may be used with my tube frame, as more fully disclosed in my prior copending application above noted.

In accordance with the preferred embodiment of my invention, the tube frame, as shown in Fig. l, is composed of three sections designated a., b and c. The yarn guiding tubes or tines 2 for the section a are mounted on a plate 4, for the section b are mounted on a plate 6 and for the sectio-n c are mounted on a plate 8-the tubes being secured to their respective plates by soldering or in any conventional manner. The plate 4 is secured to the bar section I2 by screws IIla and Ilb; the plate 6 is secured to the bar section Id by screws Ille and Illd. and the plate 8 is secured to the bar section I6 by screws IIIe and If. The end bar sections I2 and I6 have the usual brackets i8 of conventional construction for releasably mounting the tube frame in the carrier chain, each of which brackets includes a tongue member 20 adapted for reception within the links of the chain and a spring latch 22 to latch with the chain. The end bar sections I2 and I6 also carry plates 24, which are drilled as at 25 to form bearings for the pintles 26 (Fig. 5) extending from the heads 3l) of the spool. Spool brakes 9 may be provided if desired. The supporting brackets, spool bearings and brakes are of conventional construction and therefore require no further description for an understanding of my invention.

To secure the three bar sections I2, I4 and I6 together in abutting alignment with each other,

l` preferably employ internal sleeves 5B and 52 of the construction shown in Fig. 4. To fit within the bar sections the sleeves, like the sections, are rectangular in cross section and their length is suitable to hold the bar sections securely together, preferably with asweat joint to bev described. They are split, as shown at 56 and are made of spring metal so that they are urged to external dimensions exceeding the internal dimensions of the bar sections for a tight friction t but may be compressed sufficiently for insertion in the bar sections.

The screws ma to If inclusive, which secure the tube carrying plates d, 6 and 8, pass through screw threaded holes 53 in the bar sections and the screws Ib, IIlc, IIld and Ille are also received in the holes 5I of the sleeves and the latter screws thereby also aid in preventing the as sembled bar sections from pulling apart in use. However, I prefer to secure the sections additionally by sweat joining them to their sleeves, as I have found that thereby the tube frame is enabled effectively to withstand the strains incident to removing it from the chain, wiping it in to the fabric, returning it to the chain, and other movements to which it is subjected during the weaving.

, In making the extended tube frame of Fig. 1, using the parts above described and employing sweat joints, the procedure is as follows:

The sleeves 50 and 52 are preferably iirst cleaned with acid and then coated with molten lead and tin solder. The solder is allowed to harden. The internal surfaces of the bar sections I 2 and I4, adjacent their abutting ends, are then preferably also cleaned with acid. The soldercoated sleeve 50 is then compressed, as in a vise, to close the split 56 and, while it is held closed, sections I2 and III are tted over the sleeve from both ends, hammering them on if necessary. The bar sections are then closed against each other so that their ends abut each other. Thereafter heat is applied externally of the abutting end portions of the bar sections over an area suicient to remelt substantially all of the solder on sleeve D. Subsequent cooling produces a tight soldered joint between the sleeve and bar sections. y This process is repeated to join the sections Il and IB and to form a continuous bar of extended length. Thereafter the plates s, E and 8 with depending tuft tubes are applied and secured by means of the screws ma to Illj as indicated above and the brackets I8 and brakes 9 are mounted in place. The spool, which is desirably of the construction indicated at 35 in Fig. 5 and which has previously been wound with yarn, is inserted in place with its pintles passing through the bearing holes in plates 2li, the yarn from the spool is threaded through the tubes 2 in a conventional manner and the tube frame is ready for use.

In use it will be found that, although the tube frame so assembled is as long as is required in the maximum Width looms, its sectional joints are very secure and able to withstand severe loom usage.

The extended tube frame of Fig. 1 may readily be shortened to the shortened length of Fig. 2. After removing the spool 35, plates fi, 6 and 8 carrying the yarn tubes 2 are dismounted from the bar sections by taking out plate holding screws Illa to If inclusive. Heat is then applied to bar section Ill in the region marked a: to melt the solder securing sleeve 5i) within bar section Ill. VJhile the solder is melted, sections I2 and I4 are pulled apart, leaving sleeve 5i! protruding from the end of section I2. Similarly heat is applied to bar section I6 in the region marked y to melt the solder securing sleeve 5E to bar section I and, while the solder is melted, sections I l and It are pulled apart, removing sleeve 52 from section I with section I4. Sections I2 and It are then united, first acid cleaning that portion of the interior of bar section It in the region y which receives the projecting end of sleeve 53, then inserting the sleeve and remelting the solder on that portion of sleeve 5U received within bar section I6 by application of heat to the region y. The solder is again hardened. Plates 4 and 8 are then remounted on bar sections I2 and It respectively and the tube frame of shortened length is ready for reception of its spool.

Although not essential, I have found it desirable to employ with my tube frame a yarn spool which, as indicated in Fig. 5, has its heads lil secured to opposite ends of a barrel composed of sections 34, and 33 which are united by sweat joining with internal split sleeves oi spring steel indicated at .'32 and variable in length to iit selectively the extended or shortened tube frame. For a detailed. description of such a spool, reference should be made to my copending application above noted.

The spacings between the adjacent end tubes in groups a and b and the adjacent end tubes in groups b and c are the same and are equal to the constant spacing between the tubes in any one group. Accordingly, my novel tube frame, in whatever length, presents yarn tubes E a continuous aligned series uniformly spaced from each otheralong the bottom of the tube frame. Thereby wipe-in of the tube frame is effected without interference with the warp. The preferred embodiment of my tube frame is subject to some variationr to suit the needs of individual users without departing from the spirit of my invention. Thus, it is conventional, with the greater lengths oi ordinary tube frames, to employ a series of aligned spools in endwise abutment with each other rather than a single spool such as I have shown in Fig. 5, and to support the abutting spool ends the tube frame is provided with one or more additional bearing plates, similar in construction and function to those which I have shown at 24, but disposed intermediate the ends of the tube frame. That type of construction may be embodied in the tube frame of my invention by mounting on the intermediate bar section Ill such additional bearing plate. Of course, my tube frame may be composed of many more sections than the three illustrated.

I claim:

l. A. variable length tube fra-ine for Axminster looms having a plurality of bar sections arranged successively in endwise abutment with each other to form continuous bar, yarn receiving tubes supported by each of said sections, sleeves extending across the joints formed at the abutting ends of the said bar sections and means removably securing the sleeves to the bar sections to secure the sections together to form an extended tube frame, or selectively to permit removal of at least one of sections to form a shortened tube frame.

2. A variable length tube frame for Axminster looms having a yarn tube supporting bar composed of a plurality of sections arranged successively in endwise abutment with each other to form a continuous bar of uniform external dimensions, a sleeve for each joint formed at the abutting ends of two sections, eachof said sleeves being received within the bar and extending over its respective joint, `solder bonding the sleeves to the bar sections, whereby to secure the bar sections together to form a long bar, or selectively to permit removal of at least one o1" the sections, upon melting the solder, to form a shortened bar, and a group of aligned yarn tubes secured to each section, the yarn tubes of each group being in alignment with the yarn tubes of all of the other groups irrespectiverof the length of the bar and the spacing between all of the yarn tubes being substantially constant.

3. A variable length tube frame for AXminster looms having a yarn tube supporting bar cornposed of a-plurality of sections, an intermediate one of which is removable from between sections at its opposite ends, a sleeve received within and crossing from one end of the intermediate section into the adjacent end section for securing said sections together, and means for securing the opposite end of the intermediate section to the end section adjacent thereto to form an eX- tended tube frame, the said sleeve being also adapted to secure together said opposite end sections when placed in abutment with each other upon removal of the intermediate section to ferm a shortened tube frame.

4. A variable length tube frame for Axminster looms having a yarn tube supporting bar composed of a plurality of sections, an intermediate onel of which is removable from between sections at its Opposite ends, a separate sleeve received within and crossing from each end of the inter mediate section into the adjacent end section. means securing each sleeve to the intermediate section and to the end section which receives the sleeve to hold the end and intermediate sections together to form an extended tube frame, said means including separable soldering whereby the intermediate section can be removed and the end sections secured in abutment with each other to form a shortened tube frame.

5. A variable length tube frame for Axminster looms having a yarn tube supporting bar composed of a plurality of sections, an intermediate one of which is removable from between sections at its opposite ends, a fastener attached to one end of said intermediate section and to the end section adjacent thereto, a different fastener attached to the other end of said intermediate section and to the end section adjacent thereto, said fasteners securing the intermediate section in place between the end sections to form an extended tube frame, at least one of said fasteners being also adapted` to secure together said opposite end sections when placed in abutment with each other upon removal of the intermediate section to form a shortened tube frame, and a separate group of yarn tubes attached to each of the sections, said groups presenting a continuous aligned series of substantially uniformly spaced tubes along the bottom of the tube frame irrespective of its length.

6. A variable length tube frame for Axminster looms having a yarn tube supporting bar composed of a plurality of sections, an intermediate one of which is removable from between sections at its opposite ends, a sleeve received within and crossing from one end of the intermediate section into the end section adjacent thereto, the said sleeve being longitudinally split and made of spring metal to impart to the sleeve a resiliency permitting it to be contracted to an external dimension less than the internal dimension of the bar and urging it to expand to an external diameter greater than said internal dimension for a tight fit against the inside of the bar, and means securing said sleeve to the intermediate section and to said adjacent end section to hold said intermediate section and said adjacent end section together to form an extended tube frame, said means including separable soldering whereby the intermediate section can be removed and the end sections placed in abutment with each other to form a shortened tube frame, the said sleeve being also adapted to secure together said opposite end sections when so placed in abutment with each other.

7. A variable length tube frame for Axminster looms having a yarn tube supporting bar composed of a plurality of sections adapted to be secured together to form a tube frame of extended length, at least one of said bar sections being removable and the remainder being secur'able together to form a tube frame of shortened length, yarn tubes secured to the bar sections, a yarn carrying spool, and means for mounting the spool on the bar above the tubes, the said spool having a plurality of barrel sections adapted to besecured in endwise abutment with each other to form a spool of a length adapted for the extended tube frame, at least one of said barrel sections being removable and the remainder being secured together to form a spool of a length adapted for said shortened tube frame.

8. A variable length tube frame for use in AX- minster looms consisting of a spool having a plurality of barrel sections arranged in succession lengthwise of each other, a spool head secured to each end of the barrel thus formed, means holding the barrel sections together in extended position to form a long spool, means for selectively securing the sections together in position to form a shortened spool, a plurality of yarn tubes, a carrier bar for supporting the yarn tubes, arranged in sections conforming to the spool sections, each bar section carrying a series of yarn tubes, and means removably securing the carrier bar sections in place whereby selectively to form an extended tube frame or to permit removal of a bar section to form a shortened tube frame.

9. A variable length tube frame for use in Axminster looms consisting of a plurality of yarn tubes, a tubular carrier bar for supporting the yarn tubes arranged in sections disposed in abutment end to end lengthwise of the tube frame, a plurality of sleeves, one for each joint formed at the abutting ends of the bar sections, each of the sleeves being received Within the tubular carrier bar and extending over its respective joint, means removably securing the sleeves to the barrel sections to secure the sections together to form a long tube frame or selectively to permit d removal of one or more sections to form a shortened frame, and a spool for the tube frame mounted above the yarn tubes.

SPENCER S. GARRITY. 

